Long-range transport of organic aerosol to Cape Hedo, Japan--颗粒学报PARTICUOLOGY

Lun, X., Takami, A., Ma, W., Shimono, A., & Hatakeyama, S. (2014). Long-range transport of organic aerosol to Cape Hedo, Japan. Particuology, 13, 35–41. https://doi.org/10.1016/j.partic.2013.04.010

Xiaoxiu Lun ^a b *, Akinori Takami ^b, Weifang Ma ^a, Akio Shimono ^c, Shiro Hatakeyama ^d

a Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China
b National Institute for Environmental Studies, Onogawa 16-2, Tsukuba 305-8506, Japan
c Sanyu Plant Service Co., Ltd., Hashimotodai 1-8-21, Kanagawa 229-1132, Japan
d Tokyo University of Agriculture and Technology, 3-8-1Harumi-cho, Fuchu-shi, Tokyo 183-8538, Japan

10.1016/j.partic.2013.04.010

Volume 13, April 2014, Pages 35-41

Received 14 August 2012, Revised 18 April 2013, Accepted 22 April 2013, Available online 12 August 2013.

E-mail: lunxiaoxiu@bjfu.edu.cn

Highlights

• Long-range transport of organic aerosol (OA) was continuously measured for one year at Cape Hedo.

• Four OA source regions were identified: northern China, southern China, Japan, and Korea.

• OA concentrations were low from July to September and peaked during March and April.

• Frequency and concentration levels of air mass origins control average OA concentration.

• Variations of m/z 44 concentrations showed that OAs was partially oxidized during transport.

Abstract

An investigation at Cape Hedo, Japan, from 2005 to 2006, focused on the long-range transport of organic aerosol (OA) from the Asian continent. An Aerodyne aerosol mass spectrometer was used to investigate the OA data collected over the study. OA concentrations were low from July to September and peaked during March and April. Based on air mass origins, four OA source regions were identified: northern China, southern China, Japan, and Korea. OA concentrations measured at Cape Hedo from the four sources did not exhibit large differences. Conversely, the frequencies of the air masses reaching Cape Hedo from the different regions varied considerably. Northern China was identified as the primary source of organic aerosols at Cape Hedo. Examination of variations in the ratio of m/z 44 to OA concentrations with transport time showed that OAs were partially oxidized during transport

Graphical abstract

Keywords

Long-range transport; Organic aerosol; Source contribution; Okinawa

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